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Aktuelle Fachpublikationen

Detecting apoptosis of leukocytes in mouse lymph nodes

Nature Protocols 9, 1102 (2014). doi:10.1038/nprot.2014.078 Authors: Laura Gómez-Cabañas, Cristina Delgado-Martín, Pilar López-Cotarelo, Cristina Escribano-Diaz, Luis M Alonso-C, Lorena Riol-Blanco & José Luis Rodríguez-Fernández Although there are multiple methods for an ... mehr

Quantifying the forces guiding microbial cell adhesion using single-cell force spectroscopy

Nature Protocols 9, 1049 (2014). doi:10.1038/nprot.2014.066 Authors: Audrey Beaussart, Sofiane El-Kirat-Chatel, Ruby May A Sullan, David Alsteens, Philippe Herman, Sylvie Derclaye & Yves F Dufrêne During the past decades, several methods (e.g., electron microscopy, flow c ... mehr

A Breath of New Life into Human Social Cognition

Sniffing has historically been considered an olfactory behavior because inhalation is a necessary step in odor perception. Growing evidence, however, has demonstrated that the display of sniffing surpasses the bounds of those contexts that are olfactory in nature. In this issue of Chemical ... mehr

Associations Between BMI and Fat Taste Sensitivity in Humans

The objective of this study was to examine the reliability of associations between fat taste, hunger, dietary fat intake, and body mass index (BMI). Detection thresholds for oleic acid (OA) were obtained during each of 7 consecutive visits using a modified staircase procedure. Participants ... mehr

Differential Effects of Bitter Compounds on the Taste Transduction Channels TRPM5 and IP3 Receptor Type 3

Transient receptor potential cation channel subfamily M member 5 (TRPM5) is a Ca2+-activated nonselective cation channel involved in the transduction of sweet, bitter, and umami tastes. We previously showed that TRPM5 is a locus for the modulation of taste perception by temperature changes, ... mehr

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Characterization of calcified reference materials for assessing the reliability of manganese determinations in teeth and bone

As interest increases in human biomonitoring for exposure to manganese (Mn) via analysis of bone and teeth, there is a growing need for calcified reference materials (RMs) certified for Mn content. Here, several existing calcified RMs and synthesized hydroxyapatite (HA) RMs were digested wi ... mehr

Simple Sample Processing Enhances Malaria Rapid Diagnostic Test Performance

Lateral flow immunochromatographic rapid diagnostic tests (RDTs) are the primary form of medical diagnostic used for malaria in underdeveloped nations. Unfortunately, many of these tests do not detect asymptomatic malaria carriers. In order for eradication of the disease to be achieved, thi ... mehr

A Novel Electrochemical Method to Determine [small alpha]-Amylase Activity

In this paper, we report a novel electrochemical method that can be developed as a biosensor for simple and direct determination of α-amylase activity. The method is based on the hydrolysis of maltopentaose, the substrate of the enzyme, which is immobilized on the surface of a gold electrod ... mehr

Simultaneous study of subcellular exocytosis with individually addressable multiple microelectrodes

We report the application of individually addressable microelectrode arrays (MEAs) to study the heterogeneity of cell exocytosis at the subcellular level. Multiple subcellular-size electrodes are covered by a single PC12 cell for the investigation of subcellular exocytosis. PC12 cells have ... mehr

Nanostructured weathering steel for matrix-free laser desorption ionisation mass spectrometry and imaging of metabolites, drugs and complex glycans

Weathering steel has been employed for the first time to prepare sample plates for matrix-free laser desorption ionisation mass spectrometry (LDI-MS) of small molecules up to a mass range of around 1500 Da. The effective UV absorption, heat conductivity and porosity of the nanostructured in ... mehr

Alle Fachpublikationen zu Analytik

A Breath of New Life into Human Social Cognition

Sniffing has historically been considered an olfactory behavior because inhalation is a necessary step in odor perception. Growing evidence, however, has demonstrated that the display of sniffing surpasses the bounds of those contexts that are olfactory in nature. In this issue of Chemical ... mehr

Associations Between BMI and Fat Taste Sensitivity in Humans

The objective of this study was to examine the reliability of associations between fat taste, hunger, dietary fat intake, and body mass index (BMI). Detection thresholds for oleic acid (OA) were obtained during each of 7 consecutive visits using a modified staircase procedure. Participants ... mehr

Differential Effects of Bitter Compounds on the Taste Transduction Channels TRPM5 and IP3 Receptor Type 3

Transient receptor potential cation channel subfamily M member 5 (TRPM5) is a Ca2+-activated nonselective cation channel involved in the transduction of sweet, bitter, and umami tastes. We previously showed that TRPM5 is a locus for the modulation of taste perception by temperature changes, ... mehr

Comparative Neuroanatomy of the Antennal Lobes of 2 Homopteran Species

We compared the morphology of the primary olfactory center, the antennal lobe (AL), in 2 homopteran insects, Hyalesthes obsoletus Signoret (Homoptera: Cixiidae) and Scaphoideus titanus Ball (Homoptera: Cicadomorpha). The comparison between the ALs of the 2 species is particularly interestin ... mehr

Endogenous Gustatory Responses and Gene Expression Profile of Stably Proliferating Human Taste Cells Isolated From Fungiform Papillae

Investigating molecular mechanisms underlying human taste sensation requires functionally dedicated and at the same time proliferating human taste cells. Here, we isolated viable human fungiform taste papillae cells from biopsy samples, adenovirally transduced proliferation promoting genes, ... mehr

Alle Fachpublikationen zu Chemie

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 94, 360 (April 2014). doi:10.1038/labinvest.2014.49 mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 94, 250 (March 2014). doi:10.1038/labinvest.2014.9 mehr

Bone and Soft Tissue Pathology

Bone and Soft Tissue Pathology Laboratory Investigation 94, 11 (February 2014). doi:10.1038/labinvest.2014.15 mehr

Infectious Disease Pathology

Infectious Disease Pathology Laboratory Investigation 94, 390 (February 2014). doi:10.1038/labinvest.2014.27 mehr

Hematopathology

Hematopathology Laboratory Investigation 94, 332 (February 2014). doi:10.1038/labinvest.2014.26 mehr

Alle Fachpublikationen zu Labortechnik

Taguchi's methodology for determining optimum operating conditions in hydrothermal pretreatments applied to canola seeds

The aim of the present work was to determine the optimum operating conditions in hydrothermal pretreatments applied to canola seeds. The effect of these pretreatments on the canola oil extraction yield and quality was evaluated. Samples were characterized by proximate analysis. Acidity and ... mehr

Stress relaxation and activation volume in tension in β‐glucan and chitosan films

β‐Glucan isolated from baker's yeasts (Saccharomyces cerevisiae) and chitosan films were subjected to stress relaxation tests performed at different prestress levels with the aim to study the activation volume during relaxation and to establish corresponding relaxation models. Apparent acti ... mehr

Quantitative chemical composition determination and thermal analysis for typical biomass ashes in China

ABSTRACT For better use of biomass resources, a complete understanding of the chemical compositions for the biomass ashes is important. By the joint adoption of several analysis tools, the ashes of four typical biomass resources in rural areas of north China, i.e. corn stalk, wheat stalk ... mehr

Kinetic study of catechin extracted from Areca catechu seeds using green extraction method

ABSTRACT Catechin that is known for its antioxidant, antihypertension and anticancer properties can be obtained from Areca catechu. In this study, accelerated water extraction (AWE) method was used to extract catechin from A. catechu seeds. The extraction parameters tested were temperatu ... mehr

Utilization of industrial waste electric arc furnace dust as iron oxide sorbent for hydrogen sulfide removal

ABSTRACT Leaching iron from the electric arc furnace dust by using sulfuric acid to prepare iron oxide sorbent for H2S removal was studied in this paper. The influences of sulfuric acid concentration, reaction temperature and the dosage of hydrochloric acid on the iron leaching yield wer ... mehr

Alle Fachpublikationen zu Verfahrenstechnik

Evaluation of Bioaugmentation and Biostimulation Effects on the Treatment of Refinery Oily Sludge using 2n Full Factorial Design

Bioremediation approaches for treatment of oily sludge from a refinery were evaluated using the 23 factorial design. The three strategies tested were bioaugmentation with indigenous microbial consortia (MO) isolated from oily sludge, biostimulation with nutrients (NP) and biostimulation wit ... mehr

An examination of traditional foods and smoking as cadmium sources among the nine First Nations of Eeyou Istchee, Northern Quebec, Canada

Cadmium (Cd), a nonessential toxic metal present in the environment, accumulates in the organs of herbivorous mammals which typically are consumed by Aboriginal populations. The relative contribution of this potential exposure source to concentrations of blood Cd was investigated in 1429 pa ... mehr

Understanding nutrient biogeochemistry in agricultural catchments: the challenge of appropriate monitoring frequencies

We evaluate different frequencies of riverine nutrient concentration measurement to interpret diffuse pollution in agricultural catchments. We focus on three nutrient fractions, nitrate-nitrogen (NO3-N), total reactive phosphorus (TRP) and total phosphorus (TP) observed using conventional r ... mehr

A critical review of the reactivity of manganese oxides with inorganic and organic contaminants

Naturally occurring manganese (Mn(III/IV)) oxides are ubiquitous in a wide range of environmental settings and play a key role in numerous biogeochemical cycles. In addition, Mn(III/IV) oxides are powerful oxidants that are capable of oxidizing a wide range of compounds. This review critica ... mehr

Contaminant-Mediated Photobleaching of Wetland Chromophoric Dissolved Organic Matter

Photolytic transformation of organic contaminants in wetlands can be mediated by chromophoric dissolved organic matter (CDOM), which in turn can lose its reactivity from photobleaching. We collected water from a small agricultural wetland (Ohio), Kawai Nui Marsh (Hawaii), the Everglades (Fl ... mehr

Alle Fachpublikationen zu Umwelttechnik
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